Heat-distributing system.



L. L. KNOX'L B. B. TYLER.

HEAT DISTRIBUTING SYSTEM. APPLIUATION FILED 001218, 1910.

1,005,717, Patented ont. 10,1911.

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L. L. KNOX & B1B. TYLER. HEAT DISTRIBUTING SYSTEM. APPLICATION FILBDOOT. 18, 1910. i 1,005,71 7 Patented Oct. 10, 1911.

2 SHEIFTS-SHEET 2.

' vor the conduit; Fig.'

, objects .of

- concrete.

-preferably of' corrugated copper, the cor- Alayers 9- of wool f 1 sTnTEs PATENT OFFICE.

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TYLER; or wirnrnsnune, PENNSYL- or PITTSBURGH, BENNSYLVANIA.-

HEATmIsTRIBUTING sY'sTEM.

To all-whom 'it may concern:

. Beftffknown .that .j e, LUTHER a'v resident of-Avalomand EDWARD B. a resident offWilkinsbur in thegcounty TYLER, of

"Allegheny and State of ennsy1vania, have invented a new and-.fuseulxlmprovement v1n Heat ,-.Disftributing Systems, of which the following 1s a ing. drawlngs, lforming part .of this specifi- .fFigure 1 's'v-a tion'; fl Fig.l 2 is. a

frisia cross section of one of the connectlngmembers; and Fig. 5

is a. detail view `of-one 'ofthe .pipe supports. Fig', p 6. is a1 longitudinal'. vsectional detailfview :showinv one-of the expansion joints.

; Our lnvention-has relation to heat-distrib- 'uting systems and more particularly to. the' 'construction of the 'conduits Y our invention* being first, toimprove the construction .of the conduit whereby it is'rend'ered more durable. and of better heatinsulating quality; second, to provide improved'expansion connections for. the conduit sections;v and third', to .improve other detail .features of theconstruction.,

In'the accompanying-drawings, the' nu'- Ineral 2 designa-tes the heateconveying pipe, which is supported at intervals out of contact With a lsurrounding casing by vvmeans of suitable supporting stands. 3, preferably having antifriction balls 4,' upon which the pipe rests. .Surrounding this pipe and separated therefrom by a dead air space 5 is a casing consisting of an inner metallic layer 6, a surrounding layer 7 of'asbestos or other -suitable heat-insulating material, another of corrugated Y layer orlayers '8,' preferably asbestos board, a plurality of surrounding felt or similar material,

and an outer covering 10 of l reinforced The inner metallic layer 6 is rugations v giving the metal additional strength, copper being y' especially suitable for'the purposejon account of the. fact that it is .not corroded by contact with asbestos. The asbestos board 8 preferably has'its convolutions,` supported against crushing in building up the conduit by placing reeds or sticks 11 in saidconvolutions,

full, clear, and exact descrip- `tion,.reference being had to the accompanyemployed, l thefas indicated in F-igf, and may be treated with Waterproof or -reproof material, or both. The layers ofwoolfelt may be waterproofed on their outer surface, vand-'the' outer concrete casing 10.may also be waterproofed. The corrugated asbestos board-8 forms al second dead air space or-ohambertsurrounding the dead air space or chamber 5, .and its employment in the conduit greatly increases' the lheat-insulating capacity of theicasing.

l 12in Fi ".1 indicates' suitable junction `boxes, provided withman-holesand covers 13, by means fof which access may be had to vthe boxes." j 4The ends of .the pipe sections 2 extend into these junction boxes and' j are connected therein by means of castings 14. Each of the castin s is provided. at one end with .a b'oltingV fange v15, to, which4 the flanged Yend of the adJacent pipe is securely bolted. Each of the' castings is-form'ed at theopposite end with a iange 16,.havingvv secured vthereto a4 gland ring-17, through which: a relatively Vshort expansion section .118"eXvten`ds loosely intothe interior of the casting, soastobe free to move when ex- .panding "and contracting. -The outer end of --this expansion section is formed With a flange 19, to which isbolted a flange 20,4 on

`'the' adjacent pipe section 2. Each casting 14 is provided with one or more connections 21, .from which service pipes may be foot 22,.vvhich i's securely anchored to the foundation,l as the casting '.is also provided with the extension24, whichv forms a` cradle-like support for the expansion section 18, being provided with suitable grooves or seats.25, for the rings or flanges 16, 17 and 19.

` Where each pipe section 2 passesl into the junction boX, it is provided preferably with a surrounding sleeve member 26 of corruled. It 'is also provided with a suitable by the bolts 23. One end of Spezicationv'ot lietters Patent. l Patented Oct, .10, 1911, I Application filed Outuber 18,' 1910. Svel'ial 170,587,774.

gated or other suitable insulating material.

lThese not `only insulate the pipe sections against eletric currents which cause electrolysis, dead air spaces or chambers 5, and further actas supports for the pipe Where they enter the junction boxes. These sleeve menibers'are preferably exteriorly corrugated, as

shown at 27, so as to fit the corrugations `of the sheet metal lining 6. The castings 14- may be provided with drain openings 28 at the bottom, to Which drain pipes 29 may be'connected,'as shown in Fig. 4, for the but-` they also close the ends. of the l t be constructed and installed ata compara;-Il

tively low cost. It also provides simple andefficient expansion connections for the pipe and protects the latter against corrosion.

It Will be obvious that various changes may be made in the details of construction and arrangement of the several parts, Without departing from the spirit and scope of our invention, as defined in the appended claims. Thus, certain elements of the conduit casing may be retained While the other elements may be varied and changes made in thefdetails of the castings 14; the pipe sections 2, may be supported within the conduit in other Ways, and various other' changes may -be made.

We claim: l

1. A heat-conveying conduit, comprising an inner pipe, a surrounding dead air space, and an outer casing or covering having an inner layer of corrugated copper and a surrounding layer of corrugated asbestos board, substantially as described.

2. A heat-conveying conduit, comprising an inner pipe, a surrounding dead air space,

and an outer casing or covering having an inner layer of corrugated copper and a surrounding layer of corrugated asbestos board', together with means for initiallj7 supporting the asbestos board against crushing. substantially as described.

3. A heat-conveying' conduit. comprising an inner pipe having a surrounding dead air space, a casing or covering therefor comprising an inner layerof corrugated metal, a surrounding layer of heat-insulating material forming a second dead air space, and a fibrous, body surrounding the second dead air space', substantially as described.

-heat-conveying conduit, comprising an innerV pipe having a surrounding dead alr space, a casing or covering therefor comprislng an inner layer of corrugated metal,l a surrounding layer of heat-insulating material forming a second dead air Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents' space, and a fibrous body surrounding the second dead air space, together with an outer covering of concrete substantially` as described.

5. In a heat-distributing system, a con-l veyer pipe having a surrounding dead air space, a casing or covering around the dead air space, the casing or covering having an inner layer of corrugated metal, junction or' connection boxes, and insulating sleeves closing the ends of the dead air spaces Where `the p ipe enters the box, said sleeves having exterior corrugations adapted to the corrugations of the inner casing layer, substantially as described.

6. A heat-conveying conduit, comprising an inner pipe having a surrounding dead air space, a casing or covering thereforcomprising an inner layer of metal, a surrounding layer of heat-insulating material forming a second dead air space, and a fibrous body surrounding the second dead air space, together With an outer covering of concrete, substantially as described.

' 7. A heat-conveying conduit, comprising an inner pipe, a surrounding dead air space, and an outer casing or covering having an inner layer of metal and a surrounding layer of asbestos containing dead air spaces, said metal layer being of a material, such as copper, which is not corroded by' contact 85 with asbestos, and a fibrous body surrounding the asbestos, substantially as described.

8. In a heat-distributing system, a conveyer pipe formed in sections and having a surrounding casing or conduit formed with junction or connection boxes into Which the ends of the pipe sections extend, a rigid' casting in each junction box having a passage therethrough, one end of one pipe section being rigidly connected to said casting and the other pipe section having an expansion connection With the casting, said casting having an extension forming asupport for the expansion connection, substantially as described.

In testimony whereof, We have hereunto set our hands.

LUTHER L. KNOX. EDWARD B. TYLER.

Witnesses:

GEO. H. PARMELEE, H. M. CORWIN.

- Washington, ID. C. M 

